Only after returning to Paris in 1948, however, did Herrera fully develop her artistic identity, finding inspiration from the Salon des Réalités Nouvelles (“Salon of New Realities”), a group of artists who mounted an annual exhibition featuring abstract, mostly nonrepresentational work by figures such as Josef Albers and Jean Arp. Reducing her formal vocabulary to its essential elements, Herrera started creating paintings in which boldly coloured, sharply defined geometric shapes predominated, and she exhibited this new work through the salon in 1949–52.

In 1954 Herrera settled permanently in New York City. Though she continued to produce strong work throughout the 1950s, particularly the beginning of a series of stark black-and-white paintings, she failed to attain the same recognition accorded her peers. The prejudices some gallery owners held against women and Latin American artists put her at a disadvantage, as did the fact that her work—some of which prefigured the later trends of Op art and hard-edged Minimalism—was out of step with the period’s fashion for Abstract Expressionism. Moreover, Herrera herself cared little for fame during this time, preferring to concentrate on painting rather than publicity.

Herrera continued her precise chromatic explorations in the 1960s and ’70s in works such as Blanco y verde (1966), a triangular sliver of green against an austere white field, and Saturday (1978), a jet-black canvas interrupted by a thick gold zigzag. She also demonstrated an interest in pushing beyond painting’s traditional structural limitations. Since her days in Paris, she had experimented with nonrectangular canvases, and she played with dimensionality in works such as Amarillo (1971), painted on four-inch plywood.

In 1984, after years of exhibiting only sporadically, Herrera received her first retrospective, at the Alternative Museum in New York City. Still, she did not sell a single painting until two decades later when, at age 89, she was included in a show of women geometric painters at New York City’s latincollector gallery (now Frederico Sève Gallery/latincollector). From then on, her art-world stock skyrocketed. Her works were acquired for the permanent collections of the Museum of Modern Art in New York City, the Hirshhorn Museum in Washington, D.C., and Tate Modern in London, and she won accolades for several solo exhibitions. Following the success of a traveling retrospective in Europe, “Carmen Herrera: Recent Works” opened at Frederico Sève Gallery/latincollector in 2010. A 29-minute documentary on Herrera, The 100 Years Show by Alison Klayman, was released in 2015.